{"id":41346,"date":"2008-07-22T21:51:52","date_gmt":"2008-07-22T13:51:52","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/pad-39a-repairs-move-to-spray-mode-sts-125-et-srb-mate-delay\/"},"modified":"2008-07-22T21:51:52","modified_gmt":"2008-07-22T13:51:52","slug":"pad-39a-repairs-move-to-spray-mode-sts-125-et-srb-mate-delay","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/pad-39a-repairs-move-to-spray-mode-sts-125-et-srb-mate-delay\/","title":{"rendered":"Pad 39A repairs move to spray mode \u2013 STS-125 ET\/SRB mate delay"},"content":{"rendered":"<p>Engineers repairing damage to the flame trench at Pad 39A have started to spray Fondue Fyre into the damaged areas of the concrete wall \u2013 and remain on track to have the pad ready to accept Atlantis in time for the October launch of STS-125.\n<\/p>\n<p>  Meanwhile, the schedule date for Atlantis\u2019 External Tank (ET-127) mate with the twin Solid Rocket Boosters (SRBs) has taken a three day hit, due to replacement work on a damaged valve on the tank.\n<\/p>\n<p><em><img fetchpriority=\"high\" decoding=\"async\" height=\"129\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/forums\/get-attachment.asp?action=view&amp;attachmentid=13910\" width=\"600\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/em><\/p>\n<p><em>**The most comprehensive collection&nbsp;of&nbsp;Shuttle, Ares, Orion&nbsp;and ISS&nbsp;related presentations and mission documentation, plus expansive daily processing documentation and updates&nbsp;are&nbsp;<\/em><font color=\"#0000ff\"><em>available to download&nbsp;on L2<\/em><\/font><font color=\"#0000ff\"><em>&nbsp;**<\/em><\/font><\/p>\n<p><font color=\"#ff0000\"><em><font color=\"#ff0000\"><em><img loading=\"lazy\" decoding=\"async\" height=\"182\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=2859.0;attach=83887;image\" width=\"240\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/em><\/font><\/em><\/font><font color=\"#0033ff\"><em>**Click&nbsp;here for sample of L2 menu and content**<\/em><\/font><font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><\/font><\/p>\n<p><em>**<\/em><font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><em>STS-124 L2&nbsp;Sub Section (over 3400mb) \u2013 Continuing through post flight and post mission IFA\/Mission reviews. 13 Post Flight IFA Review Presentations now available.<\/em><\/font><\/p>\n<p>**STS-125\/LON-400 L2 Sub Section Special already over 1750mb in size \u2013 special section Now Live, with over&nbsp;40 superb mission presentations. STS-125 Flight Plan (newly created) and Flight Data Files now uploaded. Mission Overview in CGI&nbsp;videos building up \u2013 starting with payload overviews.&nbsp;STS-400 Flight Plan. STS-400 EVA and mission overview Presentations (14). Daily extensive processing latest.<font size=\"3\"><\/font><\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**STS-124 Post Flight \u2013 STS-119 Processing Latest**<\/em><\/font><font color=\"#000000\">&nbsp;\u2014 <\/font><font size=\"2\"><em>**STS-124 News Articles**<\/em><\/font><\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**LIVE updates: Endeavour&nbsp;Dual LON and STS-126 Processing**<\/em><\/font><\/p>\n<p>Space Technology<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>Spaceflight news subscription<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>Space Shuttle models<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>\n<p>     (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**LIVE updates on Atlantis&nbsp;STS-125 Processing Flow**<\/em><\/font><font color=\"#000000\">&nbsp;\u2014 <\/font><font size=\"2\"><em>**STS-125 News Articles**<\/em><\/font><\/p>\n<\/p>\n<p><em><u><br \/>STS-125 Processing Flow Latest:<\/u><\/em><\/p>\n<\/p>\n<\/p>\n<p>Over in OPF-1 (Orbiter Processing Facility) Atlantis is moving towards the closure of her Payload Bay Doors (PLBD) this coming weekend, as her flow remains issue-free.<\/p>\n<p>\u201cSSME carrier panel installations should be completed by today. Hubble Space Telescope mid-body highly sensitive cleaning continues through this week,\u201d noted Tuesday processing information on L2. \u201cOrbiter and OMS closeouts for flight continue this week.<\/p>\n<p>\u201cWing leading edge sensor battery installation\/checkout was performed on Monday and continues today. Master timing unit oscillator frequency adjust call to stations occurred yesterday and will be worked through Wednesday.<\/p>\n<p>\u201cFinal Ku-band antenna self test will be performed today. Completed Inertial measurement unit (IMU) checkout and calibration yesterday. GPS battery R&amp;R occurred on Monday. Scheduled to perform GPS functional today. Payload Bay Door closure is targeted for Saturday.\u201d<\/p>\n<p>As managers prepare to discuss the possibility of moving the launch date up next month,&nbsp;to as much as October 2 for STS-125 \u2013 in order to hand flexibility to STS-126\u2019s launch window in November \u2013 work in the Vehicle Assembly Building (VAB) has taken a small hit from the work required&nbsp;to replace a damaged GH2 valve on Atlantis\u2019 ET-127 tank.<\/p>\n<p>\u201cFoam application and trimming continues. GH2 2 inch disconnect repair preps and foam removal are in work. Engineering is evaluating the forward plan,\u201d noted Tuesday processing latest from the VAB\u2019s High Bay 4 checkout cell, where the tank is located.<\/p>\n<p>\u201cET\/SRB mate is now planned for August 2, due to the 2 inch disconnect valve&nbsp;work. An ET\/SRB mate review is scheduled for Friday, July 25.\u201d<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"170\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=3993.0;attach=78737;image\" width=\"239\" align=\"left\" vspace=\"5\" border=\"0\/\"><em><font color=\"#0033ff\">**New L2 Trailer Video, with examples of L2 content&nbsp;\u2013 <\/font><font color=\"#ff0000\">TRAILER NOW AVAILABLE \u2013 CLICK IMAGE**<\/font><\/em><\/p>\n<p>Alternatively <font color=\"#0000ff\">**CLICK HERE**<\/font> For the free trailer for the 1,900mb L2 video of an exclusive tour of the VAB, OPF and Pad.<\/p>\n<p>A three day hit to the mating operations for both ET\/SRB and Orbiter, will be covered by contingency days at the pad, with regards to the current October 8 launch date target.<\/p>\n<p>\u201cOn ET-127, still tracking to 15-day plan. Picked up an issue on the 2 inch GH2 disconnect. The decision was made to R&amp;R that. Over the weekend, started removing the foam from around that disconnect,\u201d added the latest Shuttle Stand-up\/Integration report. <\/p>\n<p>\u201cExpect Boeing team to be at KSC on July 24 to take up with the 2 inch disconnect work and also the angle and tip load. The disconnect issue will probably be a three-day serial impact to ET mate and orbiter mate, but have contingency time at the pad they\u2019ll use to make up for STS-125 flow.\u201d<\/p>\n<p>All ETs are housed in the checkout cells after arriving from the Michoud Assembly Facility (MAF), where they are fully inspected after their five day barge journey. <\/p>\n<p>Any work that is required to be carried out, can then place ahead of ET\/SRB mate \u2013 and in the case of ET-127, this includes the possible correction of a few minor scuffs that have been found on the tank.<\/p>\n<p>\u201cEngineering is evaluating scuffed Helium braided flex line and 3 voids in foam,\u201d added the processing report. \u201cLH (Left Hand) Vertical strut TPS (Thermal Protection System) Anomaly Bucket (completed. LO2 feedline to crossbeam foam repairs are complete and in closure.<\/p>\n<p>\u201cPDL (foam) pours planned for today: LH2 AFT dome, RH Vertical Strut, and LH2 Recirc line.\u201d <\/p>\n<p><em><u>Pad 39A Repair Status:<\/u><\/em><\/p>\n<p>Engineering work at the pad has been proceeding extremely well, despite the challenge of repairing a flame trench that liberated literally thousands of bricks during Discovery\u2019s STS-124 launch. <\/p>\n<p>A multi-phase approach has been undertaken by various contractors, who have completed the removal of unstable bricks that remained in the wall. This was followed by hydroblasting the walls in order to remove residual epoxy. <\/p>\n<p>To firm up the structure ahead of the coating of Fondu Fyre, the installation of additional anchors and plates took place to secure voids found during tap tests. <\/p>\n<p>Heavy rain in the KSC area, along with stubborn epoxy residue, has failed to delay operations that are now moving into Phase II of the repair, with the follow-on contractor (Metcon) \u2013 who have started around the clock repair activities.<\/p>\n<p>\u201cPhase II, includes anchoring and installation of the Fondu Fyre material. The Phase II effort is scheduled to be completed by 8\/11\/08,\u201d noted a previous status report on the repair process.<\/p>\n<p>\u201cThe contractor started to locate rebar on the East wall to allow drilling of holes for the wall anchors. Rebar location of the East wall was completed on Wednesday and West wall should be completed on Thursday of last week. Fondu Fyre materials, wall anchor bolts, and steel grid sheets arrived mid-week. <\/p>\n<p>\u201cThe existing vertical \u201cdovetail\u201d steel channels require additional corrosion removal before the Fondu Fyre is applied. The Fondu Fyre contractor arrived Monday (Yesterday) morning and prepared for spraying applications.<\/p>\n<p>\u201cSevere Weather initially delayed the start of the Fondu Fyre application yesterday (Monday), but the contractor picked up spraying both East and West walls shortly after the weather passed.\u201d<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"WIDTH: 282px; HEIGHT: 201px\" height=\"215\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=1756.0;attach=84402;image\" width=\"304\" align=\"left\" vspace=\"5\" border=\"0\/\">Fondu Fyre \u2013 a concrete material \u2013 has remained the only refractory material qualified for use at KSC, and that performance during the program has been satisfactory, with increased maintenance and process modifications. <\/p>\n<p>The material\u2019s performance has managed an average of five launches between major maintenance\/refurbishment, along with modifications to the material over the history of the program.<\/p>\n<p>It was chosen as the preferred repair option not long after the pad damage was evaluated by shuttle managers.. <\/p>\n<p>\u201c1. Rebuild the Flame Trench wall system per the original design (complete or incremental): Known design and performance. Large demolition requirement complicated by Asbestos removal. Long lead times for components,\u201d noted a presentation on the downselected repair method.<\/p>\n<p>\u201c2. Rebuild the Flame Trench wall system utilizing Fondue Fyre similar to what is used on the Flame Deflectors (complete or incremental): Known design and performance, though much larger application. Large demolition requirement complicated by Asbestos removal. Short lead times for repair.<\/p>\n<p>\u201c3. Apply Fondu Fyre over top of the existing wall system (complete or incremental): Unknown performance due to state of wall system. Small demolition requirement to remove loose bricks. Short lead times for repair.<\/p>\n<p>\u201c4. Use as is was not considered due to the damage which would occur to the main concrete structural wall currently exposed.\u201d<\/p>\n<p>\u201cRecommend Option 2 Partial with Risk Mitigation B. Repair all severally eroded areas + damaged area: Bottom 25\u2032 (East\/West Wall). Meets Flight Safety and Program objectives. Confidence that repair will be successful. <\/p>\n<p>\u201cDesign will be certified against defined environmental loads. Similar configurations successfully used at Pads A and B throughout Shuttle program. Monitor and evaluate after each launch. The Recommended repair approach (partial spray with Fondue Fyre) will support the current manifest.\u201d<\/p>\n<p>Another note of interest is the pad will be kitted out with new sensors, embedded into the flame trench. It is not known if all the sensors will be installed in time for STS-125\u2019s launch, but the long-term plan is set.<\/p>\n<p>\u201cAn Engineering Review Board (ERB) was held to status the team on the progress of the design for instrumenting the flame trench,\u201d noted associated information. \u201cSeveral locations have been identified as likely candidates for installing sensors. <\/p>\n<p>\u201cThe team thinks that some instrumentation can be implemented in time to support the STS-125 launch. Additional sensors may be added for subsequent launches.\u201d<\/p>\n<p>The application (spraying) of the Fondu Frye is expected to be completed by the end of the month, which places the completion of the pad\u2019s repair on August 11.<\/p>\n<p>\u201cAt Pad A, the flame trench activity is proceeding extremely well. Have the anchors installed in both the east and west walls. The grid steel system installation is continuing,\u201d added the latest Stand-up report. <\/p>\n<p>\u201cWe will begin the refractory application. On track to be completed by August 11.\u201d<\/p>\n<p><font color=\"#0000ff\"><em>L2 members<\/em><\/font><em>: All documentation&nbsp;\u2013 from which the above article has quoted snippets \u2013 is available in full in the related L2 sections, updated live.<\/em><\/p>\n<p><em>**BRAND NEW STS-124 MISSION OVERVIEW MUSIC VIDEO \u2013 AVAILABLE HERE** (Free Video Section \u2013 Only requires to be logged into the forum)<br \/><\/em><br \/><em>Click here for a range of superb&nbsp;STS mission specific music videos created by Max Q videos<\/em><em>&nbsp;<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Engineers repairing damage to the flame trench at Pad 39A have started to spray Fondue Fyre into the damaged areas of the concrete wall \u2013 and remain on track to have the pad ready to accept Atlantis in time for the October launch of STS-125. Meanwhile, the schedule date for Atlantis\u2019 External Tank (ET-127) mate [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[],"class_list":["post-41346","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41346"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=41346"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41346\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}